How is non organic limestone formed?

Answer 1

Non-organic limestone, often referred to as chemical limestone, forms primarily through the precipitation of calcium carbonate from water solutions. This process typically occurs in marine environments where high concentrations of calcium ions and carbonate ions lead to the crystallization of calcite, often facilitated by evaporation or biological activity that alters water chemistry. Over time, these precipitated minerals accumulate, forming solid limestone deposits. Such formations can also occur in freshwater settings, like caves, where stalactites and stalagmites develop from dripping mineral-rich water.